Home / 318,663.07-478,465.72-212,707.17

Finding the Fourth Proportional to 318,663.07, 478,465.72 and 212,707.17

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Solution

The fourth proportional to 318,663.07, 478,465.72 and 212,707.17 is: 319,375.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,663.07 : 478,465.72 = 212,707.17 : x
  2. Step 2: Convert to fraction form
    318,663.07/478,465.72 = 212,707.17/x
  3. Step 3: Cross multiply
    318,663.07x = 478,465.72 × 212,707.17
  4. Step 4: Simplify right side
    318,663.07x = 101,773,088,711.44
  5. Step 5: Solve for x
    x = 101,773,088,711.44/318,663.07
  6. Step 6: Final answer
    x = 319,375.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.